6416172640 has 48 divisors (see below), whose sum is σ = 16049873952. Its totient is φ = 2415499264.

The previous prime is 6416172629. The next prime is 6416172673. The reversal of 6416172640 is 462716146.

It is a self number, because there is not a number n which added to its sum of digits gives 6416172640.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1176724 + ... + 1182163.

It is an arithmetic number, because the mean of its divisors is an integer number (334372374).

Almost surely, 2^6416172640 is an apocalyptic number.

It is an amenable number.

6416172640 is an abundant number, since it is smaller than the sum of its proper divisors (9633701312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6416172640 is a wasteful number, since it uses less digits than its factorization.

6416172640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2358919 (or 2358911 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 6416172640 is about 80101.0152245276. The cubic root of 6416172640 is about 1858.1981085130.

Adding to 6416172640 its reverse (462716146), we get a palindrome (6878888786).

The spelling of 6416172640 in words is "six billion, four hundred sixteen million, one hundred seventy-two thousand, six hundred forty".